"A 22-volume, highly illustrated, A-Z general encyclopedia for all ages, featuring sections on How to use WORLD BOOK, Other Research Aids, Pronunciation Key, A Student Guide to Better Writing, Speaking, and Research Skills, and comprehensive index"--Provided by publisher.; Includes bibliographical references and index.; v. 1. A -- v. 2. B -- v. 3. C-Ch -- v. 4. Ci-Cz -- v. 5. D -- v. 6. E -- v. 7. F -- v. 8. G -- v. 9. H -- v. 10. I -- v. 11. J-K -- v. 12. L-- v. 13. M -- v. 14. N-O -- v. 15. P -- v. 16. Q-R -- v. 17. S-Sn -- v. 18. So-Sz -- v. 19. T -- v. 20. U-V -- v. 21. W-X-Y-Z -- v. 22. Research Guide - Index.;